diff options
| author | Avi Kivity <avi@qumranet.com> | 2007-12-06 19:50:00 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2008-01-30 17:53:19 +0200 |
| commit | 80a8119ca3f021037b8513d39dbb0ffd1af86b20 (patch) | |
| tree | 38928e7b3fbd21ad4508bce11fb35899babf7774 | |
| parent | 6e3d5dfbad4d8c29bdf8ed160f91f955f0efc12b (diff) | |
KVM: SVM: Trap access to the cr8 register
Later we may be able to use the virtual tpr feature, but for now,
just trap it.
Signed-off-by: Avi Kivity <avi@qumranet.com>
| -rw-r--r-- | drivers/kvm/svm.c | 8 | ||||
| -rw-r--r-- | drivers/kvm/svm.h | 1 |
2 files changed, 7 insertions, 2 deletions
diff --git a/drivers/kvm/svm.c b/drivers/kvm/svm.c index 06beed7d4a0..143d271d443 100644 --- a/drivers/kvm/svm.c +++ b/drivers/kvm/svm.c @@ -449,11 +449,13 @@ static void init_vmcb(struct vmcb *vmcb) control->intercept_cr_read = INTERCEPT_CR0_MASK | INTERCEPT_CR3_MASK | - INTERCEPT_CR4_MASK; + INTERCEPT_CR4_MASK | + INTERCEPT_CR8_MASK; control->intercept_cr_write = INTERCEPT_CR0_MASK | INTERCEPT_CR3_MASK | - INTERCEPT_CR4_MASK; + INTERCEPT_CR4_MASK | + INTERCEPT_CR8_MASK; control->intercept_dr_read = INTERCEPT_DR0_MASK | INTERCEPT_DR1_MASK | @@ -1195,10 +1197,12 @@ static int (*svm_exit_handlers[])(struct vcpu_svm *svm, [SVM_EXIT_READ_CR0] = emulate_on_interception, [SVM_EXIT_READ_CR3] = emulate_on_interception, [SVM_EXIT_READ_CR4] = emulate_on_interception, + [SVM_EXIT_READ_CR8] = emulate_on_interception, /* for now: */ [SVM_EXIT_WRITE_CR0] = emulate_on_interception, [SVM_EXIT_WRITE_CR3] = emulate_on_interception, [SVM_EXIT_WRITE_CR4] = emulate_on_interception, + [SVM_EXIT_WRITE_CR8] = emulate_on_interception, [SVM_EXIT_READ_DR0] = emulate_on_interception, [SVM_EXIT_READ_DR1] = emulate_on_interception, [SVM_EXIT_READ_DR2] = emulate_on_interception, diff --git a/drivers/kvm/svm.h b/drivers/kvm/svm.h index 5fa277c0187..5fd50491b55 100644 --- a/drivers/kvm/svm.h +++ b/drivers/kvm/svm.h @@ -204,6 +204,7 @@ struct __attribute__ ((__packed__)) vmcb { #define INTERCEPT_CR0_MASK 1 #define INTERCEPT_CR3_MASK (1 << 3) #define INTERCEPT_CR4_MASK (1 << 4) +#define INTERCEPT_CR8_MASK (1 << 8) #define INTERCEPT_DR0_MASK 1 #define INTERCEPT_DR1_MASK (1 << 1) |